1085781180 has 48 divisors (see below), whose sum is σ = 3316569984. Its totient is φ = 263219520.

The previous prime is 1085781173. The next prime is 1085781181. The reversal of 1085781180 is 811875801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085781181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821902 + ... + 823221.

It is an arithmetic number, because the mean of its divisors is an integer number (69095208).

Almost surely, 2^1085781180 is an apocalyptic number.

1085781180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085781180 is an abundant number, since it is smaller than the sum of its proper divisors (2230788804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1085781180 is a wasteful number, since it uses less digits than its factorization.

1085781180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645146 (or 1645144 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 39.

The square root of 1085781180 is about 32951.1939085673. The cubic root of 1085781180 is about 1027.8129924227.

The spelling of 1085781180 in words is "one billion, eighty-five million, seven hundred eighty-one thousand, one hundred eighty".